Dual needle injection device

Abstract

An improved injection apparatus is disclosed comprised of a first motor and a second motor, each motor having a shaft. First and second needles are located substantially perpendicular to the first and second shafts, respectively. When the first and second shafts rotate, the first and second needles, respectively, move up and down. The first and second shaft rotate in opposite directions. The first needle and second needles can be surrounded by first and second needle tubes, respectively. The first and second needle tubes can be mounted to a device housing. The first and second needles each preferably has a portion that lies inside its needle tube and a portion that lies outside its needle tube. First and second sources of liquid and first and second conveying tubes are provided. The first and second conveying tubes are connected to the first and second needles, preferably at a side arm inside the respective needle tubes. The first and second needles are preferably hollow. Preferably liquid flows from the first source of liquid to the first conveying tube then into the hollow first needle. Similar liquid flow occurs for the second needle. The first and second conveying tubes are connected to first and second meters which measure how much liquid is being fed into the first and second needles from the first and second liquid sources.

I claim: 
     
       1. An apparatus comprised of: a first motor having a first shaft;   a second motor having a second shaft;   a first needle, having a first end and a second end, the first needle connected to the first shaft at its first end such that the first needle is substantially perpendicular to the first shaft, the first needle having a tip at its second end;   a second needle, having a first end and a second end, the second needle connected to the second shaft at its first end such that the second needle is substantially perpendicular to the second shaft, the second needle having a tip at its second end;   wherein the first motor can be activated to cause the first shaft to rotate clockwise and the first needle to vibrate up and down in response to the clockwise rotation of the first shaft;   and wherein the second motor can be activated to cause the second shaft to rotate counter-clockwise and the second needle to vibrate up and down in response to the counter-clockwise rotation of the second shaft.   
     
     
       2. The apparatus of claim 1 and further comprising: a device housing;   a first needle tube surrounding the first needle;   a second needle tube surrounding the second needle;   wherein the first and second needle tubes are mounted to the device housing;   the first motor has a motor housing which is part of the device housing; and   the second motor has a motor housing which is part of the device housing.   
     
     
       3. The apparatus of claim 1 and wherein: the first needle is comprised of: a loop area;   a shaft;   and a sidearm which is further comprised of a bent portion, a connecting portion and a tip portion;   the connecting portion of the sidearm connected to the shaft of the first needle;     and the loop area of the first needle is connected to the first shaft of the first motor.   
     
     
       4. The apparatus of claim 3 and wherein: the second needle is comprised of: a loop area;   a shaft;   and a sidearm which is further comprised of a bent portion, a connecting portion, and a tip portion;     the connecting portion of the sidearm connected to the shaft of the second needle;   and the loop area of the second needle is connected to the second shaft of the second motor.   
     
     
       5. The apparatus of claim 1 and further comprised of: a first conveying tube having a first end connected to the first needle and a second end connected to a first liquid source.   
     
     
       6. The apparatus of claim 5 and further comprised of: a second conveying tube having a first end connected to the second needle and a second end connected to a second liquid source.   
     
     
       7. The apparatus of claim 5 and wherein: the first needle has a hollow portion;   and the first end of the first conveying tube is connected to the hollow portion of the first needle.   
     
     
       8. The apparatus of claim 6 and wherein: the second needle has a hollow portion;   and the first end of the second conveying tube is connected to the hollow portion of the second needle.   
     
     
       9. The apparatus of claim 3 further comprised of: a first conveying tube having a first end connected to the first needle and a second end connected to a first liquid source;   wherein the side arm of the first needle is hollow, and the first conveying tube is connected to the side arm at the bent portion of the side arm.   
     
     
       10. The apparatus of claim 9 further comprised of: the second needle is comprised of: a loop area;   a shaft;   and a sidearm which is further comprised of a bent portion, a connecting portion, and a tip portion;     the connecting portion of the sidearm connected to the shaft of the second needle;   and the loop area of the second needle is connected to the second shaft of the second motor;   further comprised of a second conveying tube having a first end connected to the first needle and a second end connected to a first liquid source;   wherein the side arm of the second needle is hollow, and the second conveying tube is connected to the side arm at the bent portion of the side arm.   
     
     
       11. The apparatus of claim 5 further comprised of: a first pinch valve;   the first pinch valve separating the first conveying tube into two parts, the first part of the conveying tube connected to the first liquid source, the second part of the first conveying tube connected to the first needle;   wherein the first pinch valve allows liquid to be transmitted from the first liquid source through the first conveying tube into the first needle when the tip of the first needle moves down substantially towards the skin, and the first pinch valve does not allow liquid to be transmitted from the first liquid source through the first conveying tube into the first needle when the tip of the first needle is not substantially moving down towards the skin.   
     
     
       12. The apparatus of claim 11 further comprised of: a second conveying tube connected to the second needle;   a second pinch valve;   the second pinch valve separating the second conveying tube into two parts, the first part of the second conveying tube connected to a second liquid source, the second part of the second conveying tube connected to the second needle;   wherein the second pinch valve allows liquid to be transmitted from the second liquid source through the second conveying tube into the second needle when the tip of the second needle moves substantially towards the skin, and the second pinch valve does not allow liquid to be transmitted from the second liquid source through the second conveying tube into the second needle when the tip of the second needle is not substantially moving towards the skin.   
     
     
       13. The apparatus of claim 2 further comprised of: a first skirt which surrounds the tip of the first needle;   and a second skirt which surrounds the tip of the second needle.   
     
     
       14. The apparatus of claim 1 wherein: the first and second needles are solid.   
     
     
       15. The apparatus of claim 1 wherein: the first and second needles can be adjusted to be parallel to one another or to be at angle with respect to one another.   
     
     
       16. The apparatus of claim 1 and wherein: the speed of the first motor can be adjusted without adjusting the second motor speed and;   the speed of the second motor can be adjusted without adjusting the first motor speed.   
     
     
       17. The apparatus of claim 1 and further comprising: a first pumping system for delivering material to the first needle; and   a first display for displaying the amount of material delivered by the first pumping system to the first needle.   
     
     
       18. The apparatus of claim 17 and wherein: the first display is digital.   
     
     
       19. The apparatus of claim 17 and further comprising: a second pumping system for delivering material to the second needle; and   a second display for displaying the amount of material delivered by the second pumping system to the second needle.   
     
     
       20. The apparatus of claim 19 and wherein: the first and second displays are digital.